CARACATUS POTTS, HIS ANGELIC CHILDREN AND TRULY SCRUMPTIOUS WIFE BURST INTO SONG WHEN THEY DISCOVER THAT CHITTY HAS BEEN CLAMPED BECAUSE THEY FORGOT TO RENEW HIS ROAD TAX. THE SPOT HIGHLIGHTS THE FACT THAT WHATEVER THE TYPE OF VEHICLE-WITHOUT VALID ROAD TAX, YOU WILL BE CAUGHT AND PUNISHED.